A ladder is leaning against a building so that the top of the ladder is touching the roof line. The bottom of the ladder is 8 feet from the building and the ladder is 17 feet long. How far is the roof line from the ground? 15 ft 9 ft 18.8 ft 25 ft
Answer: 15 ft
Step-by-step explanation:
I took the test :)
Answer:
its 15 but can yall do step by step
Step-by-step explanation:
When Gabriella runs the 400 meter dash, her finishing times are normally distributed with a mean of 79 seconds and a standard deviation of 0.5 seconds. Using the empirical rule, determine the interval of times that represents the middle 95% of her finishing times in the 400 meter race.
Answer:
(78, 80)
Step-by-step explanation:
Given a normal distribution :
Mean = 79 seconds
Standard deviation = 0.5 seconds
Using the empirical rule :
95% of her finishing times :
According to the empirical rule, 95% represents 2 standard deviations from the mean that is ± 2 standard deviations from the mean score or value.
Hence ;
The interval will be defined as ;
Mean ± 2(standard deviation)
79 ± 2(0.5)
79 ± 1
(79 - 1) ; (79 + 1)
78 ; 80
William has $22 to buy string for his guitar each set of strings cost $5 how many sets of strings can he buy
Answer: 4 sets
Step-by-step explanation:
Answer:
He can buy 4 sets of strings.
Step-by-step explanation:
If each set is 5 dollars then you multiply that by 4 and you get 20. You have 2 dollars left and you cant buy anymore sets.
Please mark brainliest.
A.How much flour is used with 6 eggs? B.How many eggs are used with 15 cups of flour?
write the quadratic equation in standard form going through the points (-1,-5) (0,-4) (2,10)
A jar is filled with pennies, nickels, and dimes. The probability of picking a
penny is 1/4, and the probability of picking a dime is 1/3. What is the
probability of picking a nickel?
1/5
1/3
5/12
7/12
Answer:
5/12
Step-by-step explanation:
Make 1/4 and 1/3, 3/12 and 4/12, add them up to equal 7/12 then subract 7 from twelve and you have 5. 5/12
- 4x + y = 6
- 5x - y = 21
The solution is
Answer:
x = -3
y = -6
Step-by-step explanation:
[tex]y = 6 + 4x \\ - 5x - (6 + 4x) = 21 \\ - 9x - 6 = 21 \\ - 9x = 27 \\ x = - 3 \\ y = 6 + (4 \times - 3) = - 6[/tex]
*
URGENT PLS ANSWER: Write the ratio of students to adults in simplest form.
Seventh-Grade Field Trip
Students
180
Adults
24
Buses
4
Answer
15 to 2
Step-by-step explanation:
What are the max/min values of the following equation?
y = 2x3 – 2x² – 18x + 18
Someone please help me out
Help fast it’s due soon
Answer:
slope is 0
Step-by-step explanation:
the line is flat
The slope is 0, it doesn't curve or anything, the line is straight
At midnight the temperature is -6. At midday the temperature is 9. By how much did the temperature rise?
Answer:
The temperature went up 15 degrees.
Answer:
15
Step-by-step explanation:
what is the answer if the wholesale price is $68 and the markup is 85%
Answer: 57.8
Step-by-step explanation: you can eithere do 68 % 85 or other way which i forgot
WILL MARK BRAINLIEST PLS HELP!! Kirsten just found out that Snap will no longer be free, and she is devastated. Snap will charge 3 cents for each picture sent and 9 cents for each video. Her parents are willing to allow her to spend no more than 15 dollars a month. Kirsten knows that based on her typical usage she will send more than 200 Snaps a month. Model Kirsten’s monthly Snap budget and show all possible combinations. Identify one plausible scenario that could occur. INEQUALITIES
she can send up to 500 snaps OR 166 videos
she can send up to 500 snaps 150 videos
The expression -7y is a
A: Constant
B: Term
C: Variable
Answer:
B: term
Step-by-step explanation:
-7 is the constant
y is a Variable
both together make a term.
The area in square feet of a rectangular field is x^2-100x+2400. The width, in feet is x-40. What is the length, in feet?
Answer:
x-60
Step-by-step explanation:
You have to factor out the quadratic.
You know that one of the factors is x-40.
To factor:
Find a number that when added to -40, gives you -100, and also when multiplied, gives you 2400.
That such number is -60.
Add an x before it, and you get (x-60)
Use algebraic strategies to solve sqrt(2x + 3) = x . How many solutions did you find? Which strategies did you use?
Answer:
itsx= -3
Step-by-step explanation:
moya picked 3 dozen apples she wents to share her apes in equal groups. show how many different way can she do this
Answer:
Groups of 12, Groups of 4, Groups of 6, Groups of 18
Step-by-step explanation:
12 x 3 = 36
36 splits evenly into 12, 4, 6, and 18 therefore that is your answer.
Find the percent increase from 2005- 2010
Find the percent of increase:
Year= 2005 2010
Population
(millions) 3.2 5.6
The percent of increase is? (PLZ HELP)
Answer:
2.4 more.
Step-by-step explanation:
If y = 5x2 – 3x + k does not hit the x-axis, then what is/are the value(s) of k?
9514 1404 393
Answer:
k > 9/20
Step-by-step explanation:
If the parabola does not touch the x-axis, the discriminant is negative. That means ...
b^2 -4ac < 0
(-3)^2 -4(5)(k) < 0
9 < 20k . . . . . . . . . add 20k
k > 9/20 . . . . . . . . .divide by 20
[tex]y=5x^2-3x+k\\[/tex]
Discriminant | D < 0 (Because doesn't intercept any x-values)
[tex]D = (-3)^2-4(5)(k) < 0\\9-20k<0\\-20k<-9\\k>\frac{9}{20}[/tex]
Therefore, the value of k must be greater than 9/20
so k > 9/20
1.2x minus 4y equals 28. What does y equal.
Answer:
y = 1.2/4 x + 7
Step-by-step explanation
1.2x - 4y =28
4y = 1.2x + 28
y = 1.2/4 x + 28/4
y = 1.2/4 x + 7
What is the factor expression for 45c + 10d
Answer:
9c + 2d
Step-by-step explanation:
45c + 10d (divide by 5)
9c + 2d
Not 100% if this is how you do factor expression, but if it is then it is right
Hope this helps ya! Keep smiling!
Answer:
9c + 2d
Step-by-step explanation:
The figure below shows two pair of congruent triangles. ΔOBR ≅ ______ ΔTAP ΔTPA ΔPAT ΔATP
Answer:
ΔTAP
Step-by-step explanation:
Answer:
The answer is APT
How should I explain how I got my answer?
Answer:
What is meant by "Explain your answer?"
On tests & problem sets students are often asked to explain the reasoning behind their answers. They are often frustrated and/or confused by “explain.” What & why are they supposed to explain? Here is one answer:
It isn't enough to get the right answer -- you have to be able to explain how you got it. To be sure you get enough practice at explaining yourself, it pays to discuss the questions with your fellow students and/or to write out explanations of your reasoning. You need to both
(1) Include the right facts, principles, etc., AND
(2) Explain the logic that you used to solve the problem. How did you get from the facts to the answer?
It is not sufficient to pile up unselected facts (even if they are correct), OR just to state the facts (even if they are the right ones), without explaining how they relate to the problem at hand, OR to just explain the logical train of thought (even if it is correct), without any specifics.
That's what you shouldn't do. What should you aim for??
Try to explain as if you were talking to a fellow student in the class who is generally intelligent, prepared, etc., but can't figure out this particular question. In other words, explain your reasoning step by step. Don't just repeat all the related facts in the book or notes--try to pick out the important, relevant points, put them in logical order, and explain (or diagram) how one leads to the next. (In other words, pretend you are writing a simple* answer key.)
*Note: The keys provided after each exam or problem set are usually quite complex and go beyond what we expect from an individual student. The posted keys tend to be so long and involved because they include not only correct answers (& explanations) but also explanations of common student misconceptions.
How to Get the Most out of Explaining
When you explain things to yourself, or to others, try not to use pronouns. Use nouns instead. This may sound silly, but it really helps you to be sure that you understand what you are saying. If you use pronouns or vague terms you can fool yourself into thinking you understand when you really don't. An example: Suppose you say "The gene is transcribed and it goes to the cytoplasm and is translated, which uses tRNA and mRNA." What do you mean by it and/or which? Is it the gene or the mRNA? Does which refer to translation or transcription? Sometimes you know, and you are just using shorthand. But sometimes you don't know, and you don't even realize it until you are forced to pick the right terms to replace "it" and "which." So try to be as specific as possible instead of as vague and as general as possible. Being specific has multiple advantages. It helps you to learn, it helps listeners understand what you are saying, and it helps graders on exams know that you really understand what you are talking about.
Samuel wants to buy a snake for $288 and the pet store owner wants him to make 6 equal payments of $49.
6 StartLongDivisionSymbol 288 EndLongDivisionSymbol minus 240 = 48. 48 minus 48 to get a remainder of 0 and a quotient of 49.
What error did the pet store owner make?
Answer:
the answer is A
Step-by-step explanation:
I got it right Good luck and I hope it helps
Answer:
its A
Step-by-step explanation:
good luck
Jordy bill at a restaurant is $49.60. He leaves a 15% tip for the waitress.
How much money does Jordy spend?
HELPPPPPP MEEEE PLSSSSSS
Answer:
34.60 ez just minus the tip with the payment
Step-by-step explanation:
15% of $49.60 is $7.44
So, $49.60 + $7.44 = $57.04
Answer: $57.04
pls answer I give brainliest
Answer:
Its c
Step-by-step explanation:
tell whether x and y are in proportional relationship. explain your reasoning
Answer:
(Some textbooks describe a proportional relationship by saying that " y varies proportionally with x " or that " y is directly proportional to x .") ... This means that as x increases, y increases and as x decreases, y decreases-and that the ratio between them always stays the same.
Step-by-step explanation:
GIVING BRAINLIEST FOR THIS QUESTION!!
Combine like terms. 15t + 9 – 7s + 10 + 5t
Answer:
32
Step-by-step explanation:
I did the math for you
Answer:
20t + 19 - 7s
Step-by-step explanation:
15t + 9 - 7s + 10 + 5t
20t + 9 - 7s + 10
20t + 19 - 7s
evaluate 19 + 6a ÷ 2
Answer:
19 + 3a
Step-by-step explanation:
19 + 6a ÷ 2
If we want to evaluate this equation, there's really only one step.
We need to divide our 6a by our 2.
1. 19 + 6a ÷ 2 => 19 + 3a
So 19 + 6a evaluated is 19 + 3a.
Feel free to give brainliest.
Have an amazing day and happy Thanksgiving!
John can skate 1,000 meters in 200 seconds. How many meters per second can he skate?
Answer:
John can share 5 meters per second
Question:
Chana and Josiah started skating at the same time in the same direction, but Josiah had a head start 10 meters past the starting line. Chana skated 3 meters per second and Josiah skated 2 meters per second.
Answer:
What does point G represent in this context?
Chanas distance from the starting line at a time when she is farther than Josiah.
